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Forward transmission interface layer I synchronization method based on user-defined Ethernet frame

An Ethernet and interface layer technology, applied in the directions of synchronization devices, electrical components, wireless communication, etc., can solve the problem of consuming large bandwidth, save processing resources, simplify the layer-one synchronization process, and improve the effect of resource utilization.

Active Publication Date: 2022-02-11
福建晶一科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] IQ data is usually compressed before doing CPRI framing, otherwise it will consume a lot of bandwidth

Method used

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  • Forward transmission interface layer I synchronization method based on user-defined Ethernet frame
  • Forward transmission interface layer I synchronization method based on user-defined Ethernet frame
  • Forward transmission interface layer I synchronization method based on user-defined Ethernet frame

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] refer to Figure 4 , in this embodiment, a fronthaul interface layer-synchronization method based on a custom Ethernet frame is provided, including HUB processing and pRRU processing,

[0038] HUB processing, as follows:

[0039] Step A1: HUB initiates the synchronization process as the main unit, and generates wireless frame count through the local clock;

[0040] Step A2: fill the superframe count in the wireless frame interval, the number of count is consistent with the standard CPRI interface;

[0041] Step A3: construct Ethernet message;

[0042] Step A4: according to the frame format of wireless frame and superframe count encapsulation front-haul interface, fill the message channel synchronous message at the fixed position of CPRI frame;

[0043] Step A5: After the fronthaul interface frame structure is completed, it is transmitted to t...

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Abstract

The invention relates to a layer-one synchronization method of a forward transmission interface based on a user-defined Ethernet frame, and provides a layer-one synchronization system, which comprises a HUB processing unit and a pRRU processing unit, and comprises the following steps: taking the HUB processing unit as a main part, initiating a layer-one synchronization process, taking the pRRU processing unit as a slave part, and after receiving a layer-one message, carrying out synchronization detection to complete layer-one synchronization. According to the method, the first-layer synchronization process is simplified, bottom layer processing resources are saved, the resource utilization rate is effectively improved, the method is applied to an extended small base station system, logic resource loss is reduced, the first-layer synchronization process is optimized according to the customized CPRI framing, control over cost and power consumption is facilitated, and the implementation mode of a remote unit is optimized.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for synchronizing front-transfer interface layer based on a self-defined Ethernet frame. Background technique [0002] The extended small base station system consists of a baseband unit BBU, an extension unit HUB, and a remote unit pRRU. Each pRRU has an electrical port, which is connected to an electrical port on the HUB through a Cat6a network cable. powered by. [0003] The pRRU is mainly responsible for the intermediate radio frequency processing of the uplink and downlink signals of the base station and the antenna interface. The HUB is mainly responsible for the data distribution and aggregation functions between the Ir optical port with the BBU and the Ir electrical port with the pRRU. [0004] IQ data is usually compressed before CPRI framing, otherwise it will consume a lot of bandwidth. The processing of layer 1 adopts the form of state machine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
CPCH04W56/001H04W56/0015H04W56/0025Y02D30/70
Inventor 孙志伟
Owner 福建晶一科技有限公司
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